Loading dump truck body



Jan. 6, 1953 J, E, DALTON 2,624,484

LOADING DUMP TRUCK BODY Filed June l5, 1950 2 SHEETS-SHEET 1 IN VEN TOR.

ATTCI RN EYS Jan. 6, 1953 .5. E. DALTON 2,624,484

LOADING DUMP TRUCK BODY 2 SHEETS-SHEET 2 Filed June l5, 1950 ATTORNEYS Patented Jan. 6, 1953 UNITED STATES PATENT OFFICE LOADING DUMP TRUCK BODY James E. Dalton, Crewe, Va.

Application June 15, 1950, Serial No. 168,366

(Cl. 21d-504) 6 Claims.

This invention relates to trucks particularly of the type used for hauling logs, lumber and similar products, and in particular a truck having a load carrying body pivotally mounted through rollers on the chassis with the rear portion of the body swingably connected to the chassis and with the load drawn upon the body and the body drawn upon the chassis by a cable extended from a winch over an A-frame structure.

The purpose of this invention is to facilitate loading logs, lumber and the like on trucks and the like.

This invention is an improvement over the truck loading dump body of my co-pending application filed June 26, 1947, with the Serial Number 757,087 and now Patent No. 2,550,230, granted April 24, 1951, in that the platform or bed of the body is mounted on rollers and the rear end thereof is pivotally connected to the chassis.

In the conventional method of loading logs, lumber and the like on a truck body it is necessary to pick up logs or lumber, one or one piece at a time, or in small bundles and this not only requires time and labor but is a difcult operation because it is very seldom that a truck can be placed where the products can be moved directly thereon. With this thought in mind this invention contemplates a truck body in which the rear end may be lowered to a convenient loading position and in which the load may readily be drawn upon the body and the body positioned on the chassis with a single cable.

The object of this invention is, therefore, to provide means for constructing a truck for carrying lumber, logs and the like whereby the truck body or bed may be lowered to a convenient loading position and then repositioned on the truck after the load is placed thereon.

Another object of the invention is to provide means for dropping a truck body downwardly to a convenient loading position without the body engaging the rear wheels of the truck.

A further object of the invention is to provide an improved loading and dumping body for trucks of the log and lumber hauling type which is of a comparatively simple and economical construction.

With these and other objects and advantages in view the invention embodies a truck body or bed mounted on wheels with a frame hingedly connecting the rear portion of the body t the rear of the chassis of a truck and with a cable eX- tended from a winch over an A-frame structure pivotally mounted on the forward end of the body.

Other features and advantages of the invention will appear from the following description taken in connection with the drawings wherein:

Figure l is a side elevational View of a truck showing the improved loading and dumping body positioned thereon with the rear end of the body broken away.

Figure 2 is similar view showing the body in the loading position.

Figure 3 is a view similar to that shown in Figure 1 showing the improved truck body with a load thereon.

Figure 4 is a plan View of the truck with the parts in the position as illustrated in Figure 1.

Figure 5 is a rear elevational view of a truck showing the loading and dumping body thereon with the platform and side beams of Ithe body shown in section.

Figure 6 is a cross section through the chassis taken on line -S of Figure 3 showing the for- Ward end of the improved loading body.

Figure 7 is a cross section through the truck taken on line l-l of Figure 3.

Figure 8 is a detail illustrating the hinging frame for attaching the truck body to the chassis with rollers at the ends of the frame shown in section.

Figure 9 is a cross section taken on line 9--9 of Figure 3 illustrating the latching elements for securing the loading body to the chassis.

Referring now to the drawings wherein like reference characters denote corresponding parts the improved loading body of this invention includes a platform I0, a truck il having a chassis I2, a frame I3 for swingably connecting the rear portion of the body t0 the chassis, a U-shaped A-frame I4, a winch I5 and a cable I6.

The body I0 is formed of side Walls I'I and I8, the outer edges of which are protected by channels I9 and 2B and the body is sup-ported on wheels 2I and 22 on the ends of an axle 23 that is journaled in a sleeve 24 carried by supports 25 and 25 on the under side of the body I0.

The wheels 2| and 22 are positioned to travel on tracks 27 and 23 on channels 20 and 30 that form the side beams of the chassis I2. The forward end of the track 27 is provided with a stop 3| and a similar stop is provided on the forward end of the track 23. With the body mounted in this manner it is free to roll rearwardly on the tracks when it is actuated to a loading or dumping position as shown in Figure 2 and as the body is drawn forwardly the wheels roll toward the stops 3l as shown in Figure 1.

The hinge frame I3 is provided with an upper shaft 32 that is journaled in a sleeve 33, welded or otherwise attached to the under surface of the body I and the opposite end of the frame is pivotally mounted on a pin 34 that is journaled in supports 35 and 36 extended downwardly from the rear ends of the beams 29 and 30 of the chassis I2. A spacing sleeve 3'.' is provided between the supports and the side members of the frame I3 are reinforced by diagonal braces 3S and 39.

lThe truss or A-frarne structure lil is formed by a substantially U-shaped bar, the lower ends of which are pvotally mounted by bolts and 4I in brackets 2 and d3 and the upper end of which is provided with an eye M to which one end of the cable I6 is attached. A pulley 45, which is also positioned in the upper end of the frame is rotatably mounted on a shaft et in depending supports 4l and d3.

A pulley block E9 with a hook 5? thereon is carried by the cable and from the pulley l5 the cable extends through an eye on a headboard 52 at the forward end of the body as shown in Figures 2 and 6. From the eye 5i the cable extends downwardly over the winch I5 which is mounted on a shaft 53 that is journaled in bearings 54 and 55 on the forward end of the chassis.

The winch may be driven from the power take off of the truck through a worin and a gear El, as shown in Figure 6, or by any suitable means.

As illustrated in Figure the forward end of the body I is provided with downwardly extended loops eiil and that are positioned to receive latches 6B and 6l pivotally mounted in the chassis I2 by a rod tained in the position of locking the truck body with the forward end downward as shown in Figure 1 by a spring 63 attached to the lower end of an arm extended downwardly from the rod 62,

the opposite end of the spring 63 being attached to an eye 65 on the chassis.

With the parts arranged in this manner the latches at the forward end of the truck body are released and with the cable I3 slack the body i@ is actuated to the position shown in Figure 2 by gravity and with the truck body in this position the hook 56 may be attached to a sling or cable around logs or lumber, as indicated by the numeral 66 and by actuating the winch the load is drawn upwardly on the body until the center of i gravity of the load reaches a point spaced outwardly from the pivot point of the body on the rolls 2| and 22.

Continued tension on the cable and frictional resistance of the load on the body will cause the body to roll forwardly until the wheels 2! and 22 strike the stops 3l. The frictional resistanc keeping the center of gravity of the load beyond the pivot point of the body until the body rolls forward and is in an upright position, is the one factor that causes gravity to dump the body when unloading.

In the position of drawing in a load, the A-frame or boom I extends upwardly as shown in Figure 2 and the boom is held in this position by chains 61 and 68 which are attached to the head or end at the points 69 and 'lo and to the boom at the points 'li and l2 respectively.

With the boom pivotally mounted on the truck it may be lowered so that it may be run into a garage and to prevent the upper end and pulley thereon dropping on the roof of the cab stops 'I3 and 'I4 are provided on the sides of the head 52.

Thesestops are positioned in the path of the sides.

The latches are reof the boom and wherein the boom may rest thereon.

With the body of the truck secured by the latches and with the forward end resting upon a block l5, as illustrated in Figures l and 3 the load may be conveyed to any suitable point where it may be dumped or dropped by releasing the cable and opening the latches.

The latches may be provided with a cable or bar 'I5 that may extend to a convenient point in the truck cab whereby the load may be released from the cab.

It will be understood that modifications may be made in the design and arrangement of `the parts without departing from the spirit of the invention.

What is claimed is:

1. In a loading and dumping truck, the combination which comprises a chassis mounted on wheels, tracks having stops on the forward ends mounted on the chassis, a truck body positioned above the chassis, wheels journaled on the under side of the truck body and positioned to travel on the said tracks, links pivotally connected to the end portion of the chassis and also to the said truck body at a point spaced rearwardly from the rear end of the chassis for hingedly connecting the truck body to the chassis, an upwardly extended U-shaped frame pivotally mounted on the forward end of the truck body, a winch mounted in the chassis, a cable extended from the winch over a pulley in the upper end of the U-shaped frame and back to the frame, a pulley block having a hook extended therefrom carried by the cable, and means retaining the said truck body on the chassis.

2. In a loading and dumping truck, the combination which comprises a chassis mounted on wheels, tracks having stops on the forward ends f' mounted on the chassis, a truck body positioned above the chassis, wheels journaled on the under side of the truck body and positioned to travel on the said tracks, links pivotally connected to the rear end of the chassis and also to the rear portion oi' said truck body at a point spaced rearwardly from the end of said chassis for hingedly connecting the truck body to the chassis, an upwardly extended U-shaped frame pivotally mounted on the forward end of the truck body, a winch mounted in the chassis, a cable extended from the winch over a pulley in the upper end of the U-shaped frame and back to the frame, a pulley block having a hook extended therefrom carried by the cable, and means retaining the said truck body on the chassis, said links connecting the truck body to the chassis whereby the rear end of the truck body drops downwardly to a surface upon which the truck is positioned.

3. A loading and dumping truck comprising a truck chassis mounted on wheels, a truck body positioned above the chassis, wheels journaled on the under side of the truck body and positioned on the chassis, a frame hingedly ccnnetced to the rear portion of the said truck body and to the rear end of the chassis at a point spaced rearwardly from the rear end of the chassis, any

upwa-r ly extended frame pivotally mounted on the forward end of the said truck body, a cable extended from the chassis over the said upwardly extended frame and attached to the said frame,

a pulley having a load carrying hook thereon carried by the cable, said cable extended to powerV means in the chassis, and a latch for lretaining, the said truck body in position on'the chassis. 4. A loading and dumping truck comprising a truck chassis mounted on wheels, a truck body positioned above the chassis, wheels iournaled on the under side of the truck body and positioned on the chassis, a frame hingedly connecting the rear portion of the said truck body to the rear end of the chassis, an upwardly extended frame pivotally mounted on the forward end of the said truck body, stops carried by the truck body for limiting forward movement of the upwardly extended frame, chains attached to the said upwardly extended franse and truck body for limiting rearward movement of the frame, a cable extended from the chassis over the said upwardly extended frame and attached to the said frame,

a pulley having a load carrying hook thereon carried by the cable, said cable extended -to power' means in the chassis, and a latch for retaining the said truck body in position on the chassis.

5. A loading and dumping truck comprising a truck chassis mounted on wheels, trucks having stops on the forward ends mounted on the chassis, a truck body positioned above the chassis, wheels journaled on the under side of the truck body and positioned on the said tracks, means hingedly connecting the lower portion of the hinged frame to the rear end of lthe chassis, means hinging the upper portion of said hinged frame to the truck body at a point spaced rearwardly from the end of the chassis, an upwardly extended U-shaped frame mounted on the forward end of the said 6 wheels, tracks having stops on the forward ends mounted on the chassis, a truck body positioned above the chassis, wheels journaled on the under side of the truck body and positioned to travel on the said tracks, links pivotally connected to the rear end of the chassis, and also -to the rear portion of said truck body at a point spaced rearwardly from the end of the said chassis for hingedly connecting the truck body to the chassis, an upwardly extended A-shaped frame mounted above the forward end of the truck body, a winch mounted in the chassis, a cable extended from the winch over a pulley in the upper end of the A-shaped frame and back to the frame, a pulley block having a hook extended therefrom carried by the cable, and means retaining the said truck body on the chassis, said links connecting the truck body to the chassis whereby the rear end of the truck body drops downwardly to a surface upon which the truck is positioned.

JAMES E. DALTON.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,537,457 Bryan May 12, 1925 2,350,841 Troche June 6, 1944 2,405,299 Godwin Aug. 6, 1946 2,408,862 Lisota Oct. 8, 1946 2,482,413 Gibson Sept. 20, 1949 2,508,740 Alvare May 23, 1950 2,584,163 Squires Feb. 5, 1952 2,588,001 Holland Mar. 4, 1952 FOREIGN PATENTS Number Country Date 372.172 Great Bri-tain May 5, 1932 500,450 Great Britain Feb. 9, 1939 

